Who dated Alfonso XII of Spain?

Alfonso XII (Alfonso Francisco de Asís Fernando Pío Juan María de la Concepción Gregorio Pelayo de Borbón y Borbón; 28 November 1857 – 25 November 1885), also known as El Pacificador (Spanish: the Peacemaker), was King of Spain from 29 December 1874 to his death in 1885.

After the Glorious Revolution of 1868 deposed his mother Isabella II from the throne, Alfonso studied in Austria and France. His mother abdicated in his favour in 1870, and he returned to Spain as king in 1874 following a military coup against the First Spanish Republic. Alfonso died aged 27 in 1885, leaving his pregnant widow, Maria Christina of Austria, as regent of Spain. Their son, Alfonso XIII, became king upon his birth the following year. Maria Christina continued as regent until Alfonso XIII came of age in 1902.

Adelaide Borghi-Mamo (9 August 1826 – 29 September 1901) was an Italian operatic mezzo-soprano who had an active international career from the 1840s through the 1880s. She was married to tenor Michele Mamo and their daughter, soprano Erminia Borghi-Mamo, also had a successful singing career.

Elena Armanda Nicolasa Sanz y Martínez de Arizala (Castellón de la Plana, 6 de diciembre de 1844​-Niza, 23 de diciembre de 1898​​) fue una cantante lírica del siglo XIX con tesitura de contralto.​

Ha sido una de las más grandes voces de la ópera de todos los tiempos. Viajó por todo el mundo exhibiendo sus grandes dotes de cantante y presumiendo de española, pero donde más se valoró su arte fue en los teatros de París. Su gran valía artística ha quedado eclipsada por su biografía.

Castelar la describió como "de labios rojos, de piel color morena, la dentadura blanca, la cabellera negra y reluciente como de azabache, la nariz remangada y abierta, el cuello carnoso y torneado, una maravilla, la frente amplia como la de una divinidad egipcia, los ojos negros e insondables cual dos abismos que llaman a la muerte y al amor".